Automatic valve mechanism.



J. S. GOLDBERG.

AUTOMATIC VALVE AIEGH UQISMv APPLICATION FILED JAN. 7. 1 0bs.- r 1,082,744. Patented. Dec. 30, 1913.

3 SHEETS-SHEET 1.

J. S. GOLDBERG.. AUTOMATIC VALVE MECHANISM.

APPLICATION FILED JAN. 7, 100B. Lg ggjjgg Patented Dec. 30, 1913.

3 SHEETS-SHEET 2.

Wflnassasj Inven or.

A OPEL-a" J. s. GOLDBERG. AUTOMATIC VALVE MECHANISM. APPLICATION FILED JAN. 7, IQQB.

1,082.?44. Patented Dec. 30, 1913 3 SHEETS-SHEET 3.

Al mrneqs supported from the framework 1.

tinirnn snares PATENT OFFICE.

JOHN S. GOLDBERG, OF CHICAGO, ILLINOIS, ASSIGNOR- T0 GOLDBERG MOTOR CAR DEVICES MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

AUTOMATIC VALVE MECHANISM.

S. Gonnnnno,

useful Improvement in Automatic Valve Mechanism, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a partot this specification.

My invention relates to automatic valve mechanism, particularly to automatic fuel level controlling means for carbureters.

The main object of myinvention is to provide for such construction that the operative parts of the automatic valve mechanism are always visible, the chamber in which the parts are disposed being in greater part of glass or other transparent material.

In the accompanying drawings which clearly illustrate my invention Figure l is a side elevation of a carburetor showing my improved valve n'iechanism applied thereto;

Fig. is a top view of the carbureter; Fig.

3 is sectional view taken on line 3 3. Fig. 2; Fig. is a top vlcw ot' the valve mechanism, the cover and float being rc moved.

1 represents the body frame of the carburetor, comprising the inner and outer walls 2 and 3 which form a heating chamber or'jacket between them and the inner Wall forming a mixing chamber or passage way 4 into which extends a nozzle 5 suitably A circular shelf 6 extends laterally from the bo dy frame and forms the lower wall of a float chamber or reservoir 7. From the lower side of this shelf extends the threaded flange 7 to which is secured the coupling tip 8 by means of a threaded flange nut 9, the tip having inlets 9 for connection, with a. source of fuel supply. The inner end '10 of'the tip is tapered to fit the tapered inner face of the standard 13 through which passes the valve shaft 14 carryingat its lower end the valve spindle 15 whose tapered end' 16 is adapted Specification of Letters Patent.

shown opposite each other.

Patented Dec. 3t), 1 91 3. Serial No. 409,697.

for engaging the tapered seat 17 surrounding the passageway or port 18 through the shelf at the lower end of the tubular part 13. The walls of the tube part 13 near the base thereof have slots 19, two such slots being In each slot there is pivoted a lever frame 20, the pivot point 21 for each lever passing through the walls or extensions 22 at the sides of the corresponding slot. The inner end 23 of each lever engages the shoulder 24 between the valve shaft and the spindle. The outer end 25 of each lever engages against the under side of a float member 26, while a stop extension 27 on each lever is adapted to engage the shelf 6 to limit the downward movement of the float member. This float me1n her is constructed of sheet material to form an annular float chamber 28 having the cen .tral sleeve 29 which slides over the tubular standard 13. The cylindrical wall of the float chamber is formed by a section of glass tubing 30 which is held in place on the shelf by the retaining flange 31, a washer 32 being inserted between the glass tube and shelf. The top inclosing wall of the float chamber is provided by the cap or cover 33 having the downwardly extending flange 34 for receiving the upper end of the glass tube, a washer 35 being inserted. The upper end of the tubular standard 13 is threaded for receiving the threaded hub 36 of the cap, the outer surface of the flange 34 being knurled so that the cap can be easily and powerfully turned to clamp the glass tube between the cap and the shelf, thus forming an oil-tight float chamber. The upper section 37 of the valve shaft 14 is of reduced diameter to provide a shoulder38, and a spring 39' within the tubular stanldard and encircling the shaft section 37 rests atits lower end against this shoulder. The upper end of the threaded part of the tube is engaged by the cap nut 40 which forms the upper abutment for the spring 39. Above the shaft part 37 is the end section 41 of still less diameter which passes through the opening 42 through the cap nut and which terminates in ahead 43. interposed between the cap nut 40 and the-hub 36 is a collar 44 "from which a pivot arm 45 extends upwardly and at whose upper end at 46 is pivoted a bell crank lever 47. One arm 48 of this bell crank lever extends under the head 43 of cap nut 40 and away from the head 43, so

that the valve shaft can be manually operated vertically. The collar 44 is clamped in place between the cap nut and the cover 33 and cap nut and cover mutually lock each other in place on the tubular standard 13, the outer surface of the cap nut being also knurled so that it can be powerfully tightened by hand.

If the float chamber is empty the Weight of the float member 26 is suflicient. to rotate the levers 20 to cause the valve shaft 8 to be raised against the pressure of spring 39, so that the valvepcint 1G is disengaged from the seat 17 to thereby open port loso that gasolene may enter from the supply source through an inlet 9, through port 18. into the interior of tube standard 13 and into the float chamber '7 through the slots 19. As the oil in the float chamber rises its floatation effect on the float member gradually.

releases the weight of the float member from the levers, and the valve rod gradually moves downward until the valve end finally engages the seat to close port 18 when the oil has reached a predetermined level in the float chamber, indicated by dotted line Z, and the flow of oil to the reservoir is cut off. When there is no oil in the reservoir the weight of the float member overcomes the pressure of the-spring 39 and depresses the levers 20 to open port lS but as soon as the oil reaches a predetermined level in the chamber and the effect of the float member is removed from the valve rod, the spring will serve to maintain the valve on its seat.

C-arbureters are usually subjected to vi bration, jarring or jolting, particularly when applied to vehicle engines, and unless the spring 39 is provided the valve rod would vibrate and jump and would open the .port 18, thus causing undue rise of the level and flooding of the carbureter through the nozzle 5 which is connected with the reservoir through passageway The spring 39 is therefore made just stiff enough to overcome the tendency of the valve to vibrate or jump from its seat but to allow the float member to maintain its'automatic control over the valve during the varying level of oil in the float chamber under normal conditions.

The passageway 4 of the carburetor communicates with the chamber 54 controlled by disk valve 55 and adapted by means of flange 5G for connection with the engine to be supplied, and the suction of the ergine draws air into the lower end of the passageway 4 which flows past the nozzle and draws gasolene therefrom, which becomes gasified and thoroughly mixed with the air before reaching the engine. As soon as the level in the reservoir drops the float, of course, automatically adjusts the valve mechanism to allow refilling of the chamber. Sometimes sufficient gasolene cannot be obtained from the nozzle for starting the engine and the priming cup 57 is adjustably secured on the threaded stem 58 extending from the carbureter frame and held in place by the clamping nut 59. If more gasolene is desired for starting the engine the valve shaft can be manually raised by raising the head 43, thereby allowing the level in the chamber to rise until oil flows over the nozzle down to the passageway 4 and into the priming cup; then when the engine is cranked the air sucked into the passageway 4 carries with it the oil from the cup and a 'very rich priming mixture is formed for starting the engine, and thereafter the engine is supplied in the normal manner from the nozzle alone. This priming is usually done by the operator from his seat, usually at a distance from the carbureter, and suitable lever mechanism is provided connected with arm 49 of hell crank lever 47 so that this bel-l crank lever may be rotated and its arm 48 caused to engage the head 43 to raise the valve rod. The crank arm or lever 60 connected to the shaft 61 on which the throttle valve 55 is mounted, is also connected With lever mechanism controlled by the operator so thatliz'e can control the throttle valveand thereby the supply of gas to the engine.

The-valve controlling the level of oil in the flott chamber may be considered as the most important valve of the carburetor, as if the level is not properly maintained the carbureter cannot operate perfectly and efficiently, and it is therefore very important that the operation of this valvi can be readily followed and seen, and the feature of having practically the entire float chamber of transparent material so that the float member and valve are at all times fully visible and so that their operation :an be closely followed, is very important.

Not only are the main parts of the automatic valve fully visible, but the entire valve mechanism can be very readily disassembled and reassembled without the use of tools. The cap having the knurled flange and having threaded engagement with the tubular standard at the center can be turned manually with great leverage and force to securely clamp the glass tube between the cap and supporting shelf and the cap nut 40, being also knurled, can be turned down powerfully against the collar 44 to securely bind itself to the threads and to assist in locking the cover against displacement.

o tube and having .5 hollow rod, a valve at the rod, lever mech a5 to hold the valve 33 level of fluid within the cl the hollow extending upwardly from may be clamped between th through the lower wall ranged so that downw level of fluid within th wearer Having described my invention I desire to secure the following claims:

1. In a device for controlling the level of fluid fuel 'for a carburetor or other point 5 of consumption, the combination oi" a lower wall, a glass tube on said wall, a hollow rod extending upwardly from the lower wall concentrically through and beyond the is tube, a cap for closing the upper end of the threaded engagement at its center with the rod whereby said glass tube may be clamped between the cap and the lower wall to form therewith a supply chamber, a valve stem extending through the lower end 01" said valve .stem, there being an inlet opening through the lower vall controlled by said valve, afloat member surrounding and adapted forvertical reciprocation on said anism connecting between said float member and the valve stem and arranged so that downward movement of the float member will cause upward movement ofthe valve stem,

to (loxe the inlet opening. said float member being governed by the level of fluid within the chamber and-cooperating with the spring to regulate the size of the inlet opening in proportion to the lumber, said glass tube rendering visible the float member and the valve mechanism whereby their operation may be observed, a cap nut having threaded engagement with the upper end of rod to close the end of said rod and to-guide the upper end of the valve stem, and lover mechanism supported above the cap for controlling the operation of the valve independently of the automatic float mecha- 4) nistn and spring.

2. In a device for controlling the level of fluid fuel for a carburetor or other point. of consumption, the combination of a lower wall, a glass tube on said wall, a hollow rod the lower wall concentrically through and beyond the glass tube, a cap for closing the upper end of the tube and having threaded engagement at its center with the rod whereby said glass tube c ip and the lower wall to form therewith a supply chamher, a valve stem extending through the hollow rod valve at the lower end of said valve stem, there being an inlet opening controlled by said valve, a float member surrounding and adapted for vertical reciprocal ion on said rod. lever mechanism connecting between said that member and the valve stem and arard movement of the float member will. cause upward movement of the valve stem, spring mechanism tend hold the valve to close the inlet opening, said float member being governed by the clnnnber and cospring n'techanism tending.

ing to combination of a l operating with the spring to regulate the size of the inlet opening in proportion to the level of fluid within the chamber, said glass tube rendering visible the fl at member and the valve mechanism whereby their operation may be obsm'ved, a cap nut having threaded engagement with the upper end of the hollow rod to close the end of said rod and to guide the upper end of the valve stem, and lever mechanism clamped to the rod between the cap nut and cap for controlling the operation of the valve independently of the. float member and spring.

i'il a device for controlling the flow of fluid "fuel to a point of-consumption. the combination oi a lower supporting wall, a cylindrical wall carried by said lower wall, a tubular rod extending axially from the lower wall and through the cylindrical wall, a cap engaging the upper end of the cylin drieal wall and having threaded engagement with the threaded upper end of the tubular rod. :1 locking collar engaging the threaded end of the tubular rod and engaging the cap, said walls "forming a re ervoir for fluid luel, an inlet in said lower wall, a valve for controlling the tlow through said inlet, a valve stem extending upwardly through and from the tubular rod, a float member within the reservoir having connection with said valve stem, and lever mechanism carried by said locking collar and adapted for engagement with the upper end of the valve stem to con-- trol said valve.

4. In a device for controlling the flow of fluid fuel tova point of consumption, the ower supporting wall, a cylindrical wall carried by said lower wall a tubular rod extending axially from the lower wall and through the cylindrical wall, a cap engaging the end of the cylindrical wall and having threadetil engagement with the threaded upper end of the tubular rod. a locking collar engaging thethreaded end of the tubular rod and engaging the cap, said walls forming a reservoir for fluid fuel, an inlet in said lower wall, a valve for controlling the flow through said inlet, a valve stem extending upwardly through and from the tubular rod, a float member within the reservoir having connection with said valve stem, an upward extension on said locking colh r, a bell cranlt lever pivoted at its elbow to said extension, and a head at the upper end of the valve. stem, one limb of the bell crank lever being adapted for engagement with srid head and the other limb o'l said lever being adapted for connection with actuating meclmnism. actuation of said bell cranlt levcr causing adjustment of the valve stem and valve.

5. .ln mechanism for of fluid fuel to a combination of a cylindrical wall controlling the Help point of consumptiom the lower supporting wall, a supported on said lower wall, a tubular rod extending upwardly from the lower wall and through the cylindrical wall, said rod having its upper end threaded, a cap engaging the upper end of the cylindrical wall and having threaded engagement at its center with said rod, said walls forming a reservoir for fluid fuel, an inlet in the lower wall, a valve controlling said inlet, a valve stem extending upwardly through and beyond said rod, a float member guided on said rod, lever mechanism connecting said float member-with the valve stem, :1. locking collarv having threaded engagcment with the rod for locking the cap in position, a cap nut engaging and closing the upper end of the valve stem, said valve stem extending through'the upper Wall of said cap nut and being guided thereby, a head at the upper end of said valve stem, an upward extension from said locking collar, and a lever pivoted to said upward extension, one end of said lever being adapted for association with the valve stem head and the other cnd ol said lever being adapted for connection with actuating mechanism, actuation of said lever enabling adjustment of said valve independent of the float member. i

(S. In a device for controlling the flow of liquid fuel, the combination of a lower supporting wall, a vertical inclosing wall mounted on said lower wall, a tube'extending upwardly from the lower supporting Wall within the inclosing wall, a cap adapted to rest on said inclosing vertical wall, said cap having threaded engagement with the upper end of said tube, thereby clamping said inclosing wall between the cap and the supporting wall and forming a reservoir for liquid fuel, an inlet in the lower wall,1.a valve for cont-rolling said inlet, a valve stem extending upwardly through saidtube, a spring in said tube tending to move said valve stem downwardly, a float member movement of said float to said valve-memher, an angularly adjustable collar on said top, a lever pivoted on said collar and v adapted to have one of its arms engaging" part of said needle valve member, and a spring for normally holding said lever out of such engagement with said needle valve member.

I11 witness whereof, I hereunto subscribe my name this 4th day of January D., 1908.

JOHN S. GOLDBERG.

Witnesses:

CHARLES J. SCHMIDT, GEORGE E. HIGHAM. 

